You probably found some of my old posts on this sling.
I'm not sure how much of a discount you want on it. Yes, they're $34.95 each plus Priority shipping on the website. I buy them less at the local sport shows, but of course I pay $10 then for admission to the show. When doing this I can get them for $30 each, maybe closer to $25 each if I buy several at a time but that was a few years ago. So, I don't know of any significantly less expensive way to buy them.
If you buy 3 and ship them all together, for example, its probably your best bet as the shipping cost gets spread among them. I'd call them and ask.
With mine I switched a few of them to Uncle Mike's swivels this year and that seems to work well. You can get them this way direct from the factory too if you call and ask, and the Uncle Mikes are quicker to put on/off a rifle.
This year mine got used in Ontario, Wyoming and of course Michigan. I still very much like them.